Public Advisory (TCP)
A plain-language interpretation of the JTWC warning bulletin.
Provides latest information on tropical storm/typhoon watches and warnings.
Issued at least every 6 hours when a tropical cyclone is expected to affect WFO Guam's
Area of Responsibility with 48 hours.
Local Statement (HLS)
Specific forecast for each island under a watch or warning, including rain,
wind, surf, storm surge, as well as recommended preparations.
Tropical Cyclone Update (TCU)
Bulletins providing users of significant changes in a tropical cyclone in between regularly scheduled public advisories
May include hourly estimates of the tropical cyclone position while within range (about 230 miles) of Guam's Doppler radar, normally if an eye is present
May provide other applicable information, including the acquisition and interpretation of significant new data (e.g. surface observation, radar, or satellite imagery)